Commercial Roofing Break-Even Analysis: Plan For $104K/Month

Fixed costs $12.1K/mo Monthly overhead

Contribution margin 74% After variable costs

Break-even revenue $16.4K/mo Revenue target

Break-even timing Month 7 Model crossover

Break-even calculator

Use this to test whether monthly revenue can cover variable costs and the fixed overhead this roofing business carries.

Lean Base Full

Monthly revenue Revenue is the pool that covers overhead after direct job costs. $ Slow month Busy month Variable expenses Materials, commissions, and subcontractors rise with each job. $ Lean costs Heavy costs

Money available to cover fixed costs $63,600 $86,000 revenue - $22,400 variable expenses

Margin ratio

74%

Covers fixed costs

$2,917 short

Fixed monthly costs Office, fleet, insurance, software, and payroll must be covered each month. $ Slim overhead Full overhead

Break-even chart Revenue Total costs

Which commercial roofing expenses are fixed, and which move with sales?

Cost classification

Break-even is only useful if each expense lands in the right bucket. In this model, Month 7 break-even depends on separating true monthly overhead from job-linked materials, hardware, commissions, subcontractors, and staffing capacity.

Expense	Cost	Break-Even Treatment	Common Mistake
Office Rent	Fixed	Hold at $5,000 per month across the planning range.	Spreading rent by job and hiding the monthly cash floor.
Business Insurance	Fixed	Include $1,200 per month before calculating required gross profit.	Leaving insurance out because it does not attach to one project.
General Software Subscriptions	Fixed	Model $600 per month as recurring overhead.	Treating subscription tools as optional after launch.
Vehicle Fleet Fixed Maintenance	Semi-fixed	Use $1,500 per month until fleet capacity changes.	Assuming fleet support rises smoothly with each new job.
Lead Roofer / Technician Payroll	Semi-fixed	Add payroll in staffing steps as crew capacity expands.	Treating crew payroll as fully variable when hiring creates monthly capacity risk.
Utilities & Internet	Semi-variable	Start with the $800 monthly base and adjust for usage as operations grow.	Calling the full bill fixed and missing usage pressure.
Roofing Materials & Components	Variable	Apply 15.0% of revenue in the first year, declining by year assumptions.	Using one flat dollar amount instead of tying materials to job revenue.
Sales Team Commissions	Variable	Apply 4.0% of revenue in the first year, then use the forecast rate.	Putting commissions in fixed payroll and overstating break-even margin.

How does break-even shift from a lean roofing launch to a full-scale operation?

Scenario table

As the mix shifts from 60% new installs to 40% and maintenance rises from 20% to 60%, margin improves. But higher payroll and marketing commitments raise the monthly break-even bar.

Planning case only: these break-even figures are assumptions, not guarantees.

Scenario	Monthly Revenue	Variable Costs	Fixed Costs	CM Ratio	Operating Profit	Break-Even Signal
Lean launch case	$1.04M	$270K	$767K	74%	$0	Thin cushion; fixed costs drive the risk.
Base scale case	$1.50M	$315K	$1.18M	79%	$0	Better mix, but backlog must stay steady.
Full expansion case	$1.85M	$296K	$1.56M	84%	$0	Best margin, but only with heavier overhead covered.

What breaks the break-even plan for a commercial roofing company?

Stress test

Base case sits at $1.036M monthly break-even on $767k fixed costs and 74% contribution margin. A 10% revenue miss or 10% fixed-cost increase adds about $104k to break-even; a 5-point margin hit lifts it to about $1.11M/month.

Stress Case	Changed Assumption	Break-Even Revenue	Revenue Gap	Risk Signal
Current plan	No change.	$1.04M	$0 gap	No cushion if bids slip.
Revenue shortfall	Monthly revenue comes in 10% below plan.	$1.15M	$115k gap	Slower bid wins widen the hole fast.
Fixed-cost increase	Fixed costs rise 10% on insurance, labor, and overhead.	$1.14M	$104k gap	Cost creep pushes break-even up fast.
Margin pressure	Variable expense share rises from 26% to 31%.	$1.11M	$75k gap	Rework or material inflation cuts the cushion.
Combined pressure	Revenue is 10% short, fixed costs rise 10%, and margin falls to 69%.	$1.22M	$187k gap	A slow quarter plus cost creep makes break-even hard to hold.

What should a commercial roofing founder verify before signing the lease, hiring crews, and buying vehicles?

Founder checklist

Verify the plan can carry $358K in cash through Month 7 and fund the $398K startup build before you lock in lease, fleet, or headcount. If the pipeline, margins, and utilization do not support that burn, break-even slips fast.

1Cash Cushion$358K

Hold at least $358K of cash through Month 7, because that is the minimum cash point before break-even and it keeps the business alive while startup spend lands.

2Startup Capex$398K

Verify you can fund the $398K buildout across office setup, three service vehicles, roofing gear, drone tools, safety equipment, inspection tools, and warehouse setup without draining working cash.

3Fixed Burn$72.5K/mo

Check that you can carry about $72.5K a month in fixed burn from rent, insurance, software, fleet maintenance, overhead, and pay before revenue catches up.

4Bid Pipeline$2.5K CAC

Here’s the quick math: $50K in Year 1 marketing at a $2.5K CAC supports 20 new customers, so test the bid pipeline before you hire full crews.

5Contribution74% CM

Make sure jobs still leave about 74% contribution after 15% materials, 4% hardware, 4% sales commissions, and 3% subcontractor fees, and use maintenance contracts to smooth cash flow.

6Fleet Ramp3 vehicles

Keep the three-vehicle fleet, supplier accounts, insurance, and warehouse plan tied to real utilization, and do not add more yard space until crews stay busy.